# 數學不求人 vs DotTrail

The clearest difference is update cadence: DotTrail at daily against 數學不求人's every 6 weeks. 數學不求人's advantage is iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

數學不求人 ships an update every 6 weeks, DotTrail daily. The most recent releases landed on October 13, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | 數學不求人 | DotTrail |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Daily** |
| Size | 62 MB | 7 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shih-Chieh Lin](https://appshunter.io/developer/1270187242) | [SHU-CHIH LIN](https://appshunter.io/developer/6809671847) |

## What reviewers say

### 數學不求人

[App page](https://appshunter.io/ios/app/id6746408810)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### DotTrail

[App page](https://appshunter.io/ios/app/dottrail/id6809820649)

**In-app purchases:** none


## Frequently asked questions

### Is 數學不求人 free?

數學不求人 is free to download, with no in-app purchases.

### Is DotTrail free?

DotTrail is free to download, with no in-app purchases.

### Do 數學不求人 or DotTrail have ads?

Both 數學不求人 and DotTrail show ads.

### Which is updated more often, 數學不求人 or DotTrail?

數學不求人 ships an update every 6 weeks, and DotTrail daily. Most recently, 數學不求人 was updated on October 13, 2026 and DotTrail on October 16, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*